# Tuffy Underseat Lockbox W/ Combo Lock For Chevrolet Silverado & Gmc Sierra Crew & Double Cab

The Tuffy lockbox mounts under the rear seat in Chevy and GMC Crew Cab and Double Cab pickup trucks. This high security welded steel security lockbox has a full width formfitting design creating over 3500 cubic inches of lockable storage. Easily access your secured contents by flipping up the corresponding lid under your 60/40 split bench seat. The unique design allows the full width to be used to stow firearms or other long items. Feel confident securing your gear using Tuffy's Pry-Guard Locking System with three-digit combination security locks with built in weather seals. Mounts inconspicuously under the seat out of sight of opportunistic thieves with chamfered corners for easier passenger access. Declutter your space by quickly and easily installing this Tuffy lockbox using the factory hardware without drilling. When you need additional floor space, simply remove the lockbox in seconds without the need for any tools.

-   Double or Crew Cab required. Does not fit Regular Cab. No Drilling required. Fastens with original OEM hardware. Foam Liner and Dividers sold separately.
    
    This Part Fits:
    
    Year
    
    Make
    
    Model
    
    Submodel
    
    2019-2026
    
    Chevrolet
    
    Silverado 1500
    
    Custom
    
    2019-2026
    
    Chevrolet
    
    Silverado 1500
    
    Custom Trail Boss
    
    2019-2026
    
    Chevrolet
    
    Silverado 1500
    
    High Country
    
    2019-2026
    
    Chevrolet
    
    Silverado 1500
    
    LT
    
    2019-2026
    
    Chevrolet
    
    Silverado 1500
    
    LT Trail Boss
    
    2019-2026
    
    Chevrolet
    
    Silverado 1500
    
    LTZ
    
    2023-2026
    
    Chevrolet
    
    Silverado 1500
    
    PPV
    
    2019-2026
    
    Chevrolet
    
    Silverado 1500
    
    RST
    
    2019-2021
    
    Chevrolet
    
    Silverado 1500
    
    SSV
    
    2019-2026
    
    Chevrolet
    
    Silverado 1500
    
    WT
    
    2022-2026
    
    Chevrolet
    
    Silverado 1500
    
    ZR2
    
    2020-2026
    
    Chevrolet
    
    Silverado 2500 HD
    
    Custom
    
    2019-2026
    
    Chevrolet
    
    Silverado 2500 HD
    
    High Country
    
    2019-2026
    
    Chevrolet
    
    Silverado 2500 HD
    
    LT
    
    2019-2026
    
    Chevrolet
    
    Silverado 2500 HD
    
    LTZ
    
    2019-2026
    
    Chevrolet
    
    Silverado 2500 HD
    
    WT
    
    2024-2026
    
    Chevrolet
    
    Silverado 2500 HD
    
    ZR2
    
    2019-2026
    
    Chevrolet
    
    Silverado 3500 HD
    
    High Country
    
    2019-2026
    
    Chevrolet
    
    Silverado 3500 HD
    
    LT
    
    2019-2026
    
    Chevrolet
    
    Silverado 3500 HD
    
    LTZ
    
    2019-2026
    
    Chevrolet
    
    Silverado 3500 HD
    
    WT
    
    2019-2026
    
    GMC
    
    Sierra 1500
    
    AT4
    
    2022-2026
    
    GMC
    
    Sierra 1500
    
    AT4X
    
    2019-2021
    
    GMC
    
    Sierra 1500
    
    Base
    
    2019-2026
    
    GMC
    
    Sierra 1500
    
    Denali
    
    2022-2026
    
    GMC
    
    Sierra 1500
    
    Denali Ultimate
    
    2019-2026
    
    GMC
    
    Sierra 1500
    
    Elevation
    
    2022-2026
    
    GMC
    
    Sierra 1500
    
    Pro
    
    2019-2026
    
    GMC
    
    Sierra 1500
    
    SLE
    
    2019-2026
    
    GMC
    
    Sierra 1500
    
    SLT
    
    2020-2026
    
    GMC
    
    Sierra 2500 HD
    
    AT4
    
    2024-2026
    
    GMC
    
    Sierra 2500 HD
    
    AT4X
    
    2019-2021
    
    GMC
    
    Sierra 2500 HD
    
    Base
    
    2019-2026
    
    GMC
    
    Sierra 2500 HD
    
    Denali
    
    2024-2026
    
    GMC
    
    Sierra 2500 HD
    
    Denali Ultimate
    
    2022-2026
    
    GMC
    
    Sierra 2500 HD
    
    Pro
    
    2019-2026
    
    GMC
    
    Sierra 2500 HD
    
    SLE
    
    2019-2026
    
    GMC
    
    Sierra 2500 HD
    
    SLT
    
    2020-2026
    
    GMC
    
    Sierra 3500 HD
    
    AT4
    
    2019-2021
    
    GMC
    
    Sierra 3500 HD
    
    Base
    
    2019-2026
    
    GMC
    
    Sierra 3500 HD
    
    Denali
    
    2024-2026
    
    GMC
    
    Sierra 3500 HD
    
    Denali Ultimate
    
    2022-2026
    
    GMC
    
    Sierra 3500 HD
    
    Pro
    
    2019-2026
    
    GMC
    
    Sierra 3500 HD
    
    SLE
    
    2019-2026
    
    GMC
    
    Sierra 3500 HD
    
    SLT

## Details

- **Price:** 929.45 CAD
- **Vendor:** Tuffy Products
- **Type:** Cargo Boxes & Bags

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 929.45 CAD | In stock |

## Images

- Photo - Primary
- Photo - Close Up
- Photo - Close Up
- Photo - Close Up
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- User 9
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/tuffy-underseat-lockbox-w-combo-lock-for-chevrolet-silverado-gmc-sierra-crew-double-cab)
> Updated: 2026-07-08